Molding frame or box.



No. 670,695. 1 Patented Mar. 26,1901.

' L. TILLET.

MOLDING FRAME 0B BOX.

(Application filed July 26, 1900.) (No Model.)

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.UNITED STATES PATENT OFFICE.

LEON TILLET, OF VRIGNE-AUX-BOIS, FRANCE.

MOLDING FRAME ,O'R Box.

SPECIFICATION formingpart of Letters Patent No. 670,695, dated March 26, 1901.

Application filed July 2 6, 1 900.

To all whom it may concern/.-

Be it known that I, LEON TILLET, manufacturer, a citizen of the Republic of France, residing at Vrigne-aux-Bois, Ardenn'es Department, in the Republic of France, have invented certain new and useful Improvements in Molding Frames or Boxes, of which the following is a specification.

Molding frames or boxes are usually joined together by means of fixed pins which offer several disadvantages. They make the constrnction of the frames or boxes costly, their position is never sufficiently exact to allow of the parts of the frame or box being interchanged, for the holes intended to' receive the pins are not strictly equidistant, and the pins themselves arenot always riveted straight. If such disadvantages are not of any great importance when molding by hand, that is not the case when molding by machine, for then each part of the frame or box must be joined to each of the other parts and correspond exactly as to the joining-marks on the sections or molding-plates and also on the table when one is required.

My invention has for its object to do away WlI h such disadvantages and to allow of molding-boxes being simply, quickly, and cheaply manufactured and then joined together with the greatest precision, the parts of the said boxes beinginterchangeable. To obtain these results, I have devised to have molded on each part of the box or frame projections and recesses variable as to form and dimensions and which correspond to the parts of the box which have to come together when joined. The said projections and recesses being formed when molding, the parts are always identically the same both as todimensions and positions, so that they are interchangeable without requiring any special adjusting or mounting. The result is a great economy in the manufacture of molding boxes or frames, the ease with which the same maybe supplied in a very short time to any foundry on a large scale, the perfect accuracy of the boxes or frames, and the easier and quicker use of the latter on account of their being interchangeable.

The accompanying drawings show, by way of example, one form of my invention.

. Figure 1 is an elevation of two parts of a molding box or frame placed one above the other, parts of the same being broken away.

Serial No. 2&,916. (N0 model.)

,Fig. 2 is a plan view of the male part of the box or frame, and Fig. 3 is a side elevation.

On three sides of each box or frame are formed, by molding when making the same, such projections a b c and recesses that the projection of the male part of the box corresponds exactly to the female part of the same, and vice versa. In each case, however, the projections on one of the mold sections, as the projections a, c of the upper or cope section, are made shorter than the projection b of the other (lower or drag) section, the long projection fitting between the two short ones. As will be seen in Fig. 2, these projections are within the planes of the vertical or side surfaces of the moldthat is, they do not project into the space inclosed by the mold. The projections 17 being longer than the others, it follows that said long projections will come into guiding engagement with the short projections, in the act of closing the mold or flask, before the main portions of the meeting edges of the flask-sections come in contact with each other. The sections will thus be better guided in their relative movement than if all the projectionswere of the same length. It will also be observed that the projections a. b c and the recesses adapted to receive them form but a small portion of the meeting edges of the flask-sections, the main portions of said edges being straight and parallel with the end surfaces of the sections.

The forms and dimensions of the recesses and projections may be modified, as Well as the number of the same, and they may be the box or frame.

I claim- A flask, comprising two sections provided with interlocking projections at their adjacent edges and with recesses to receive the said projections, the projection of one section being longer than those of the other section,

and the inner surfaces of said projections being flush with the inner surface of the flask.

In testimony that I claim the foregoingas my invention I have signed my name in presence of two subscribing witnesses.

LEON TILLET.

Witnesses:

OAMILLE BLETRY, EUGENE WATTIER.

formed on either two, three, or four sides of j 

